CN103265737A - Heatproof cable sheath material - Google Patents

Abstract

The invention discloses a heatproof cable sheath material. The heatproof cable sheath material comprises the following raw materials by weight: 95 to 105 parts of chloroprene rubber S40V, 15 to 20 parts of semi-reinforcing carbon black N774, 20 to 30 parts of a modification filling material, 4 to 7 parts of polyethylene wax, 7 to 10 parts of dibutyl maleate, 4 to 6 parts of itaconate, 2 to 3 parts of magnesium oxide, 2 to 4 parts of ammonium biphosphate, 1 to 2 parts of 4-methylbenzenesulfonyl hydrazide, 1 to 2 parts of anilmomethyl triethoxy silane, 1 to 2 parts of the promoter DM, 1 to 2 parts of the anti-aging agent MB, 1 to 2 parts of the antioxidant 1010 and 1 to 2 parts of dipentamethylenethiuram hexasulfide. The cable sheath material produced in the invention has excellent physical properties, a stable dimension, low shrinking percentage, high tensile strength, great tearing strength, strong resilience and good resistance to oil, heat, burning, sunlight, ozone, acid and alkali and chemical reagents; and the modification filling material provided by the invention has good dispersibility and low surface tension, enables tensile strength and stress at definite elongation of the cable sheath material to be further improved, reduces heat generation and compression set, delays the ageing speed of the cable sheath material, is capable of resisting acid and alkali and allows production cost to be reduced.

Description

A kind of heat-resisting cable sheath material

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Technical field

The present invention relates generally to a kind of cable jacket material, relates in particular to a kind of heat-resisting cable sheath material.

Background technology

Chloroprene rubber has good physical and mechanical properties, and oil resistant is heat-resisting, anti-combustion, anti-daylight, anti-ozone, acid and alkali-resistance, chemical-resistant reagent.Have higher draw tensile strength, elongation and reversible crystallinity, cementability is good, ageing-resistant, heat-resisting, oil resistant, chemical resistance excellence, but at 80～100 ℃ of life-time service, has certain flame retardant resistance, but it is relatively poor that shortcoming is package stability, therefore just can guarantee that as cable jacket material it has very strong heat-resisting, ageing-resistant, oil resistant, characteristic such as corrosion-resistant with chloroprene rubber, and improve its package stability by adding some modified fillers, with regard to the further performance of improving cable jacket material.

Summary of the invention

The object of the invention is exactly for a kind of heat-resisting cable sheath material is provided.

The present invention is achieved by the following technical solutions:

A kind of heat-resisting cable sheath material, it is made up of the raw material of following weight parts:

Chloroprene rubber S40V 95-105, semi-reinforcing hydrocarbon black N774 15-20, modified filler 20-30, polyethylene wax 4-7, dibutyl maleate 7-10, itaconic ester 4-6, magnesium oxide 2-3, primary ammonium phosphate 2-4, p-toluene sulfonyl hydrazide 1-2, anilinomethyl triethoxysilane 1-2, altax 1-2, antioxidant MB 1-2, antioxidant 1010 1-2, six sulfuration di-penta methylene thiuram 1-2;

Described modified filler is made up of the raw material of following weight parts:

The sulphuric acid soln 900-1000 of 0.3-0.5%, barium sulphide 80-90, ethanol 30-40, aluminium-hydroxide powder 10-15, sorbitan monooleate 10-12, distearyl acyl-oxygen aluminum isopropoxide acid esters 2-3, titanium dioxide 2-4, Union carbide A-162 1-2, sodium polyacrylate 4-6, dicumyl peroxide 1-2, bubble flower alkali 4-6, stearic acid 2-4, water are an amount of;

Continue to feed above-mentioned sulphuric acid soln in the barium sulphide, after feeding finishes, add sodium polyacrylate, fully stirred 6-10 minute down at 60-80 ℃, remove by filter filtrate, filter cake is washed 2-3 time, add 1-2 times of water, aluminium-hydroxide powder, titanium dioxide, sorbitan monooleate, Union carbide A-162, under 2000-2500 rev/min rotating speed dispersed with stirring 10-20 minute, add each raw material of residue again, fully stir, being heated to temperature is 70-80 ℃, ball milling is dried to such an extent that fineness is the modified filler of 2-4 μ m.

Advantage of the present invention is:

The cable jacket material physicals excellence that the present invention produces, dimensional stabilizing, shrinking percentage is low, product draws degree of promoting the strong, tearing toughness, screen resilience performance strong, has good oil resistant, and is heat-resisting, anti-combustion, anti-daylight, anti-ozone, acid and alkali-resistance, chemical reagent-resistant performance, modified filler of the present invention, good dispersity, surface tension is low, has further improved tensile strength, the stress at definite elongation of CABLE MATERIALS, low-heat-generation and compression set are fallen, not only can delay the aging speed of CABLE MATERIALS, and the energy acid-alkali-corrosive-resisting, reduce production costs.

Embodiment

Embodiment 1

A kind of heat-resisting cable sheath material is characterized in that what it was made up of the raw material of following weight parts (kilogram):

Chloroprene rubber S40V 105, semi-reinforcing hydrocarbon black N774 20, modified filler 30, polyethylene wax 7, dibutyl maleate 10, itaconic ester 6, magnesium oxide 3, primary ammonium phosphate 4, p-toluene sulfonyl hydrazide 2, anilinomethyl triethoxysilane 2, altax 2, antioxidant MB 2, antioxidant 1010 1, six sulfuration di-penta methylene thiurams 2;

Described modified filler is made up of the raw material of following weight parts:

Concentration is that 0.5% sulphuric acid soln 1000, barium sulphide 90, ethanol 40, aluminium-hydroxide powder 15, sorbitan monooleate 12, distearyl acyl-oxygen aluminum isopropoxide acid esters 3, titanium dioxide 4, Union carbide A-162 2, sodium polyacrylate 6, dicumyl peroxide 2, bubble flower alkali 6, stearic acid 3, water are an amount of;

Above-mentioned sulphuric acid soln is continued to import in the above-mentioned barium sulphide, after importing finishes, add sodium polyacrylate, fully stirred 10 minutes down at 80 ℃, remove by filter filtrate, filter cake is washed 3 times, add 2 times of water, aluminium-hydroxide powder, titanium dioxide, sorbitan monooleate, Union carbide A-162, stirring and segregation is 20 minutes under 2500 rev/mins rotating speed, add each raw material of residue, fully stir, being heated to temperature is 80 ℃, ball milling is dried to such an extent that fineness is the modified filler of 4 μ m.

The preparation method of described heat-resisting cable sheath material may further comprise the steps:

(1) above-mentioned chloroprene rubber S40V is mixed the adding Banbury mixer with polyethylene wax, dibutyl maleate, itaconic ester, magnesium oxide, be 85-90 ℃ in temperature and descended mixing 2-3 minute;

(2) adding above-mentioned semi-reinforcing hydrocarbon black N774 20, modified filler, primary ammonium phosphate, p-toluene sulfonyl hydrazide, anilinomethyl triethoxysilane again, is under 85-90 ℃ in temperature, mixing 4-6 minute;

(3) add each raw material of residue again, be 55-60 ℃ in temperature and descended mixing 2-3 minute, the discharging cooling namely gets described cable jacket material.

Performance test:

Tensile strength: 17.3MPa;

Elongation at break: 701%;

Oil-proofness: 100 ℃ * 70h of 20# machine oil, elongation at break conservation rate 71.5%, tensile strength conservation rate 73.2%;

Anti-ozone: 25 ℃, 24h, ozone concn 0.025%, do not have cracking;

Ageing-resistant: 120 ℃, 150h, tensile strength conservation rate 89.7%, elongation at break conservation rate 78.3%.

Claims (1)

1. heat-resisting cable sheath material is characterized in that what it was made up of the raw material of following weight parts:

Chloroprene rubber S40V 95-105, semi-reinforcing hydrocarbon black N774 15-20, modified filler 20-30, polyethylene wax 4-7, dibutyl maleate 7-10, itaconic ester 4-6, magnesium oxide 2-3, primary ammonium phosphate 2-4, p-toluene sulfonyl hydrazide 1-2, anilinomethyl triethoxysilane 1-2, altax 1-2, antioxidant MB 1-2, antioxidant 1010 1-2, six sulfuration di-penta methylene thiuram 1-2;

Described modified filler is made up of the raw material of following weight parts:

The sulphuric acid soln 900-1000 of 0.3-0.5%, barium sulphide 80-90, ethanol 30-40, aluminium-hydroxide powder 10-15, sorbitan monooleate 10-12, distearyl acyl-oxygen aluminum isopropoxide acid esters 2-3, titanium dioxide 2-4, Union carbide A-162 1-2, sodium polyacrylate 4-6, dicumyl peroxide 1-2, bubble flower alkali 4-6, stearic acid 2-4, water are an amount of;

Continue to feed above-mentioned sulphuric acid soln in the barium sulphide, after feeding finishes, add sodium polyacrylate, fully stirred 6-10 minute down at 60-80 ℃, remove by filter filtrate, filter cake is washed 2-3 time, add 1-2 times of water, aluminium-hydroxide powder, titanium dioxide, sorbitan monooleate, Union carbide A-162, under 2000-2500 rev/min rotating speed dispersed with stirring 10-20 minute, add each raw material of residue again, fully stir, being heated to temperature is 70-80 ℃, ball milling is dried to such an extent that fineness is the modified filler of 2-4 μ m.